Tissue graft retainer



FIG. 1 is a top perspective view of a tissue graft retainer showing our new design having a first part and a second part which is identical to and assembled with the first part;

FIG. 2 is a left side elevational view thereof;

FIG. 3 is right side elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a front elevational view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof;

FIG. 8 is a top perspective view of the first part of the tissue graft retainer of FIG. 1, with the second part removed to show an interior face of the first part which is identical to an interior face of the second part;

FIG. 9 is a left side elevational view thereof;

FIG. 10 is right side elevational view thereof;

FIG. 11 is a rear elevational view thereof;

FIG. 12 is a front elevational view thereof;

FIG. 13 is a top plan view thereof; and,

FIG. 14 is a bottom plan view thereof.

The broken lines in the figures show portions of the tissue graft retainer that form no part of the claimed design. 

CLAIM The ornamental design for a tissue graft retainer, as shown and described. 